diff --git a/Roboter/tpe/exceptions/roboter/R2D2.java b/Roboter/tpe/exceptions/roboter/R2D2.java
index cb57b29..b35e9c4 100644
--- a/Roboter/tpe/exceptions/roboter/R2D2.java
+++ b/Roboter/tpe/exceptions/roboter/R2D2.java
@@ -1,12 +1,15 @@
 package tpe.exceptions.roboter;
 
 import tpe.exceptions.roboter.exceptions.RobotException;
+import tpe.exceptions.roboter.exceptions.RobotMagicValueException;
 
 public class R2D2 implements RobotControl, RobotInstructions {
 	private static int counter = 0;
 	private String name;
 	private boolean powerSwitch;
 	private int id;
+	private RobotMagicValueException robotMagicValueException;
+	StringBuilder sb = new StringBuilder();
 	
 	public R2D2(String name, boolean powerSwitch) {
 		super();
@@ -17,6 +20,7 @@ public class R2D2 implements RobotControl, RobotInstructions {
 
 	@Override
 	public int getId() {
+		
 		return id;
 	}
 
@@ -46,8 +50,19 @@ public class R2D2 implements RobotControl, RobotInstructions {
 
 	@Override
 	public String speak(int[] zahlen) {
-		// TODO Auto-generated method stub
-		return null;
+		if(robotMagicValueException.invalidNumber(zahlen)==true)
+			return "42 ist keine gültige Eingabe";
+		else {
+		for (int i = 0; i < zahlen.length; i++) {
+			  sb.append(zahlen[i]);
+			  if (i < zahlen.length - 1) {
+			    sb.append(", ");
+			  }
+			}
+
+			String output = sb.toString();
+			return output;
+		}
 	}
 
 	@Override
@@ -69,5 +84,5 @@ public class R2D2 implements RobotControl, RobotInstructions {
 	    }
 	    return zahlen;
 	}
-
+   
 }
diff --git a/Roboter/tpe/exceptions/roboter/exceptions/RobotException.java b/Roboter/tpe/exceptions/roboter/exceptions/RobotException.java
index a7c8afa..6b7ae91 100644
--- a/Roboter/tpe/exceptions/roboter/exceptions/RobotException.java
+++ b/Roboter/tpe/exceptions/roboter/exceptions/RobotException.java
@@ -1,5 +1,6 @@
 package tpe.exceptions.roboter.exceptions;
 
 public class RobotException {
+	
 
 }
diff --git a/Roboter/tpe/exceptions/roboter/exceptions/RobotMagicValueException.java b/Roboter/tpe/exceptions/roboter/exceptions/RobotMagicValueException.java
index 853d4fa..84dae3d 100644
--- a/Roboter/tpe/exceptions/roboter/exceptions/RobotMagicValueException.java
+++ b/Roboter/tpe/exceptions/roboter/exceptions/RobotMagicValueException.java
@@ -1,5 +1,16 @@
 package tpe.exceptions.roboter.exceptions;
 
-public class RobotMagicValueException {
 
+public class RobotMagicValueException {
+	
+	public boolean invalidNumber(int[] zahlen) {
+		
+		boolean error=false;
+		for(int i =0; i<zahlen.length;i++)
+		{
+			if(zahlen[i]==42)
+				error=true ;
+		}
+		return error;
+	}
 }
diff --git a/Roboter/tpe/exceptions/roboter/facade/RobotFactory.java b/Roboter/tpe/exceptions/roboter/facade/RobotFactory.java
new file mode 100644
index 0000000..d47dcd3
--- /dev/null
+++ b/Roboter/tpe/exceptions/roboter/facade/RobotFactory.java
@@ -0,0 +1,13 @@
+package tpe.exceptions.roboter.facade;
+
+import tpe.exceptions.roboter.C3PO;
+import tpe.exceptions.roboter.R2D2;
+
+public class RobotFactory {
+	private R2D2 r2d2;
+	private C3PO c3po;
+	public int constructRobot() {
+		
+	}
+
+}
diff --git a/Roboter/tpe/exceptions/roboter/ui/UI.java b/Roboter/tpe/exceptions/roboter/ui/UI.java
new file mode 100644
index 0000000..e2ae7d8
--- /dev/null
+++ b/Roboter/tpe/exceptions/roboter/ui/UI.java
@@ -0,0 +1,5 @@
+package tpe.exceptions.roboter.ui;
+
+public class UI {
+
+}